I love:
Proserpina- this is a name I've discovered because of your posts and have come to love since thenMorgana- so much beauty and power without needing any frillsMelusine- hauntingly beautiful and melodic
Hespera- a beautiful whispery name that makes me think of lanterns in a dark forest.

I love Malachite, for a girl or a boy. mal-ah-kite- gorgeous green stone, nickname kai/kye, which has various meanings when searched in wikipedia.
I also love Cypress.
I love unusual names but your taste is unlike mine, so I will make a list of the beautiful and magical nature names I love: (that go with Aphrodite)
MalachiteCypress
Demarys/Demaris (from demeter/demetria) demm-air-iss)-lover of the earth and fruitful increase -(with demi, mary for a nn)
OleanderAries, Jericho, Junia, Garnet, Aqua, Lark, Aura, Zephyr, Haven, Quartz for shorter middle name options

Bellicent - this reminds me too much of my wicked aunt Belinda.
Belphoebe - prefer just PhoebeCallisto - not bad, prefer Calista, or Calanthe/CalanthaCirce - reminds me of Cirque
Eimyrja - very confusingEurydice - not a fan at allFiammetta - love this
Hespera - like thisIphigenia - too complicatedLorelei - love thisLysistrata - too complicated
Mardoll/Mardolla - not a fan
Marzanna - nice!
Mellonia - too close to melanoma
Melpomene - too confusing Melusine - sounds like a disease :/Morgana - adore this!
Nausicaa - not too bad, but prefer Narcissa or Nerissa!
Niniane - all I get is ninny.Pandora - LOVE this!
Polyhymnia - I don't think any child would be able to pronounce this.
Proserpina - not too badTanaquil - first read that as Tequila
Tinuviel - not sure how I feel on thisTitania - I adore this, but I'm afraid the three letters at the beginning will not go over well in a high school setting.
Vanadis - not really the right style for Aphrodite's sister.
Villanelle - all I get is villain :/Yvaine - this sounds so magical!

The ones that shine brightest for me:Fiammetta (still love this! Super warm and fuzzy)Callisto
Hespera (like her more and more, as I keep seeing her on your threads!)Pandora
And suprisingly, for me, Villanelle (I said it aloud and it's so pretty!)